For it is here attributed unto those, that are strangers unto vertue, not only as a sinne, but also as a great disprofit, and is opposed to that fruitfulnesse wherein the happinesse of the faithfull doth consist. It is a sinne, because it containes ingratitude in it, and that not the least degree of ingratitude; for though a man be mindfull of the benefit which he hath received, purposing to be thankfull for it, yet if he doth not render thankes, he is said to be ungratefull; yea, and though he doth render thankes, if he doth it coldly, and doth not endeavour to answer the merits of him that bestowed this benefit upon him, and the dignity of the benefit, he is not yet free from this vice; but if he doth quite forget the benefit which he hath received, then he is rightly said to be as it were twice ungratefull. _Vse._ This may serve to admonish us, to beware of this kinde of ingratitude, and not to think our selves ungratefull then only, when we do repay evill for good, but also when we doe any way forget the benefit which we have received. Doctrine 3. _God accounts him forgetfull of the benefits which he hath received, that is not effectually mindfull of them, that is, that doth not so remember them, as to live answerably._ This is gathered therehence, that fruitfulnesse and forgetfulnesse are opposed. For they are made immediately contraries, so that there is no _medium_ betweene them. _Deuteronomy 32.18._ The Israelites are said to have forgotten God for that reason only, because they had forsaken the true worship of God, and his due obedience, as it is explained, verse 15. So _Psalms 106.13._ where they are said to have forgotten God and his workes, as often as they murmured against him, although there is no doubt but if they had beene asked, they could have easily related the whole history of those things that God had done for them in Egypt. After the like manner are the words of Christ to be understood, when he asked his Disciples, whether they had forgotten the miracle of the five loaves and two fishes, intimating that it was a manifest token of their forgetfulnesse, that they were at that time so troubled about bread. _Vse_ 1. This may serve to admonish us, not to rest satisfied with such a memory as consists in bare contemplation, which God accounts forgetfulnesse. 2. To exhort us, by all meanes to study this art of memory. Which that we may the better do, let us observe these Rules. _Rule 1._ That we do not slightly passe over the thought of these things, but look narrowly into the natures and circumstances of them. For the more plainly we come to understand them, the more firmely do we retaine them.